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how to get the one entry from hashmap without iterating
Is there a elegant way of obtaining only one Entry<K,V> from HashMap, without iterating, if key is not known.
14 An...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
...u are not defining a function, so function default values are irrelevant:
from datetime import datetime, timedelta
class MyModel(models.Model):
# default to 1 day from now
my_date = models.DateTimeField(default=datetime.now() + timedelta(days=1))
This last line is not defining a function; it ...
Why doesn't Java allow overriding of static methods?
...ces where there is one. In Java this happens when calling a static method from an object (obj.staticMethod()) -- which is allowed and uses the compile-time types. When the static call is in a non-static method of a class, the "current" object could be a derived type of the class -- but static meth...
How to secure MongoDB with username and password
...remote access will ask for the user name & password. I tried the tutorial from the MongoDB site and did following:
15 Answ...
Open another application from your own (intent)
...te an intent with action=MAIN and category=LAUNCHER
Get the PackageManager from the current context using context.getPackageManager
packageManager.queryIntentActivity(<intent>, 0) where intent has category=LAUNCHER, action=MAIN or packageManager.resolveActivity(<intent>, 0) to get the fi...
How to call getClass() from a static method in Java?
...afe...
Caution when using this in a Base Class that other classes inherit from:
It is also worth noting that if this snippet is shaped as a static method of some base class then currentClass value will always be a reference to that base class rather than to any subclass that may be using that meth...
How can I set NODE_ENV=production on Windows?
... they persist beyond just the single command prompt, you can find the tool from System in Control Panel (or by typing 'environment' into the search box in the start menu).
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How to check if an app is installed from a web-page on an iPhone?
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As far as I know you can not, from a browser, check if an app is installed or not.
But you can try redirecting the phone to the app, and if nothing happens redirect the phone to a specified page, like this:
setTimeout(function () { window.location = "ht...
php: determine where function was called from
is there a way to find out, where a function in PHP was called from?
example:
8 Answers
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How to pass boolean values to a PowerShell script from a command prompt
I have to invoke a PowerShell script from a batch file. One of the arguments to the script is a boolean value:
10 Answers
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